Apparatus for extinguishing fires in closed compartments.



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APPARATUSFUR EXTINGUISHING FIRES iN CLOSED VCMPAHTMENTS.

(Application med aan. 14, 19am' (No Model.)

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UNITED .l vSTATES i L PATENT Canica.

' HENRY B. FEBIGER, OF PHILADELPHIA, PENNSYLVANIA.

APPARATUS FOR EXTINGUISHING FIRESqINCLOSED COMPARTMENTS.

SPECIFICATION forming* part of Letters Patent N0. 702,713, dated. J' une 17, 1902. Application {iled January 14, 1901. Serial No. 43,115. (No model.)`

To a/ZZ whom t may concern.-

Be it known that I, HENRY B. FEBIGER, a citizen' of the United States, residing in the city and county of Philadelphia, Statepofv Pennsylvania, have invented a'new'anduse ture of the'samebelow the freezing-point ofv water, and introducing it into said compartmenti f v In carrying out my process I preferably employ in practice sulfur dioxid as the gas, and I evaporate it in-a'suitable chamber or evaporater, such as a coil of pipes, and then introduce it into the compartment in which the fire is located, and inthe accompanying drawings I have shown an apparatus by means of which my process'can be effected.

The figure represents a diagrammatic plan view of the apparatus.

Referring to the drawing, A designates a tank or tanks containing, preferably, liquefied sulfur dioXid, said tank having a suitable connection landlvalve with the coil of pipes B on the interior of the chamber C, which latter, with thepipes, constitute the evaporator, and said chamber being provided with an inlet D, having a gate E, it being seen that said pipe D discharges into said chamber C at a suitable point andis connected suitably connected with the necessary parts p to operate the samei The liquefied gas-for example, sulfur dito a gas by being introduced into the pipes B .in the chamber C and the change of state takes place, the vacuum-pump'J being employed tocreate a vacuum, and thus reduce the pressure in coils B in order to cause the liquefied gas to evaporate at a very low temi perature, the discharge fromthevacuum- `oXid-is held in the tank A, and by properly manipulating the valve the liquid is changed pump forcing the' gas through thev pipe L and into the pipe D, fromA thence into fthe chamber C and around, between, and over the coil B, the thus-cooled gas being withdrawn from the chamber C by the fan Gthrough the pipe F and introduced into the compartment H, whereby the fire therein is instantly extinguished and the temperature in the compartment and of the material is reduced below any possible ignition-point. l

As it is necessary to have a certain amount of heat to permit or insure the properevaporation vof the liquefied gas under certain conditions, I have connected the inlet D with v the interior of the compartment H in crderat the proper time to cause hot air to enter the evaporator by being introduced into the chamber C to be directed against the coil B in order, as above stated,- to assist in the proper evaporation of the liquefied gas.

It will be seen that by this method I am enabled to reduce the temperature of the gas in the chamber or coil B to a very low degree, the heat and .the vacuum assisting'in the proper evaporation, and by passing the gas through the chamber a temperature below '.the freezing-point ot' water is obtained, and

yfor extinguishing fires'k in closed` compartments I claim certain features thereinpsuch as employing aliquefied combustion-nonsupporting gas and evaporating the same and using heat at a suitable 'point to assist in the evaporation and also creating a vacuum in Ice s the evaporator, and I do not, therefore, claim the same herein.

Having thus described my invention, what I claim as new, and desire to secu re by Letters Patent, is-

l. The process of extinguishing' fires in a closed compartment Whichconsists in employing a liquelied combustion non supporting' gas, changing the state of the same to a gas employing heat from the re to assist in the evaporation of said gas and then introducing the gas into the compartment.

2. The process of extinguishing fires in a closed compartment, which consists in employing a liquefied combnstion-non-supporting gas, evaporating the same in a proper evaporator, directing hot air from the compartment in which fire exists against a suitable portion of said evaporator to assist in the evaporation of said gas and introducing the gas into the compartment.

3. The process of extinguishing fire in a closed compartment, which consists iu employing a liquefied combustion-non-supporting gas, changing the state of the same and discharging into an evaporator, directing hot air from the compartment into the evaporator, and introducing the gas into the compartment.

HENRY B. FEBIGER.

Witnesses:

WM. C. WIEDERSHEIM, E. HAYWARD FAIRBANKS. 

